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staging: dpaa2-ethsw: ignore state interrupts when the interface is not running

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Link state interrupts will be transmitted to the DPSW object even though
the user has not yet issued a 'ifconfig up' on a switch interface. Don't
act on those interrupts since there are of no interrest.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/20200714133431.17532-3-ioana.ciornei@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ioana Ciornei 2020-07-14 16:34:27 +03:00 committed by Greg Kroah-Hartman
parent 06ddf551e4
commit 2cde6410c1
1 changed files with 6 additions and 0 deletions
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6
drivers/staging/fsl-dpaa2/ethsw/ethsw.c
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@ -445,6 +445,12 @@ static int port_carrier_state_sync(struct net_device *netdev)
struct dpsw_link_state state;
int err;
/* Interrupts are received even though no one issued an 'ifconfig up'
* on the switch interface. Ignore these link state update interrupts
*/
if (!netif_running(netdev))
return 0;
err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx, &state);